Romorantin Lanthenay Beauvais Wastewater Treatment Plant, Pruniers-en-Sologne, France

The Romorantin Lanthenay Beauvais wastewater treatment plant is located in Pruniers-en-Sologne, a commune in the Loir-et-Cher department of Centre-Val de Loire, France. The plant serves a population of around 13,700, classifying it as a medium-sized agglomeration under French and EU regulations. It is situated inland, away from the coast, and discharges into the local watershed. As a French wastewater treatment facility, the plant is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. French regulations transpose this directive, and plants serving between 10,000 and 100,000 population equivalents typically employ biological treatment processes to meet effluent standards. The plant's design and operation align with these regulatory requirements, ensuring compliance with national and European water quality goals. The plant's treated effluent is discharged into the Sauldre River, a tributary of the Cher River, which flows into the Loire River and ultimately reaches the Atlantic Ocean. The Loire basin is ecologically significant, supporting diverse aquatic life and migratory fish species. The plant plays a key role in protecting the water quality of the Sauldre and downstream rivers, contributing to the health of the Loire watershed.

The plant discharges into the Sauldre River, which flows into the Cher River, a major tributary of the Loire River. The Loire basin is one of France's largest watersheds, supporting diverse aquatic ecosystems and migratory fish such as Atlantic salmon and European eel. The plant's treatment helps maintain water quality in this sensitive river network, which is important for both ecological health and downstream water uses.